South Korea will use Pfizer’s Covid-19 vaccine as the second dose for 760,000 people who have already been administered the AstraZeneca shot, joining a growing list of countries that have mixed the two jabs.
Seoul made the decision due to a delayed shipment of 835,000 AstraZeneca doses that was expected by the end of the month. Officials had hoped to use the jabs as a second shot for around 760,000 health and frontline workers who had already received their first dose in April. With the doses now not expected to arrive until July or later, the South Korean anti-Covid task force announced it would use the Pfizer shot as a replacement – a strategy already in practice in several other countries.
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